summaryrefslogtreecommitdiff
path: root/jni/ruby/sample/observ.rb
blob: 061e3c6a10e7750d89ce25acc436a719937e9ac2 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
#! /usr/local/bin/ruby

require "thread"
require "observer"

class Tick
  include Observable
  def initialize
    Thread.start do
      loop do
        sleep 0.999
        now = Time.now
        changed
        notify_observers(now.hour, now.min, now.sec)
      end
    end
  end
end

class Clock
  def initialize(tick)
    @tick = tick
    @tick.add_observer(self)
  end
  def update(h, m, s)
    printf "\e[8D%02d:%02d:%02d", h, m, s
    STDOUT.flush
  end
end

clock = Clock.new(Tick.new)
sleep